The vagus nerve is kind of a wellness it-girl right now. But some of the claims that influencers make about it are a little... out there. So we decided to do some research and get to the bottom of what this nerve can and can't do, and...

Why do we faint? Because sometimes, your nervous system just doesn’t know what to do with itself.

When you're sick you just want to be left alone. Sometimes that's because you physically can't move, but other times, it might have more to do with the way your immune system is connected to your brain.

In this video Paul Andersen gives an overview of the human urinary system. The system consist of the kidneys, ureters, bladder, and urethra. The kidneys excrete waste from the blood in urine. He explains how the nephron is responsible...

Anyone who’s frequently around kids knows that they throw up a lot, and at seemingly weird times. But there are some interesting biological reasons why that might be!

This week we are looking at your parasympathetic division, which is the "resting and digesting" unit. Unfortunately, learning about this de-stressing division also involves a whole lot of memorization. Don't worry, though - we've...

It's another round of Hank facing off against one of the VidCon elite—this time, Executive Vice President Colin Hickey. Will Colin's surprise expertise help him dominate?

Scientists have had some success with a new technique to restore awareness to a person in a vegetative state & also that we could potentially use the water cycle to power most of the United States!

A while back, we were tasked with answering some of the world's most asked questions. So here, in one convenient location, are some of those questions and their answers.

Why do we faint? Because sometimes, your nervous system just doesn't know what to do with itself.

It can be a wonderful feeling to give your tired eyes a good rub. And rubbing your eyes can help keep them moist, but it turns out it also can affect your heart rate.

In an effort to protect us from getting killed by something we’ve ingested, our brain’s vomit control center processes a lot of information from several different places … and sometimes is a little overly cautious.

The FDA has approved a whole new class of antidepressant, and ultrasounds might be far more useful than we thought.

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How do I get rid of hiccups?” Allow us at SciShow to explain.

Nearly 200 years ago, Alexis St. Martin was shot in the stomach. He was saved by local army doctor William Beaumont, but had to live out his remaining years with a gaping hole in the stomach -- allowing Beaumont to learn a lot...

When you’re sick you just want to be left alone. Sometimes that’s because you physically can’t move, but other times, it might have more to do with the way your immune system is connected to your brain.

Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that's almost impossible to ignore. After you've reacted by...

Howcast - Learn about vagus nerve stimulation, or VNS, to treat epilepsy from Steve Wolf, MD and Patty McGoldrick, NP in this Howcast video.

The satisfaction, relief, and even pleasure you feel after a good pooping session is due to the stimulation of two nerves: the pudendal nerve and the vagus nerve. Both have slightly different effects, but together, they contribute to...

The satisfaction, relief, and even pleasure you feel after a good pooping session is due to the stimulation of two nerves: the pudendal nerve and the vagus nerve. Both have slightly different effects, but together, they contribute to...

Uncover the alarming link between nighttime vulnerabilities, suicidal ideation among youth, and the presence of family-owned firearms. Delve into the impacts of disrupted circadian rhythms and the quiet of evening hours. This video...

Join Dr. Tracey Marks as she delves into the intricate relationship between antipsychotic medications, the gut microbiome, and weight gain. Discover how these medications influence the balance of our gut bacteria and the cascading...

Vagal stimulation maneuvers work best for anxiety you feel physically, like heart racing, body sweating or feeling light-headed. But you don’t have to be in the throes of a panic attack to do it. You can do it if you’re...

Your intestines has about 39 trillion microorganisms in it. And yes I said trillion. We call this collection of organisms the microbiome and it consists of mostly bacteria, but also viruses and fungi. Collectively it weighs...